I have a Nikon D7200. I've been having this issue since I bought it (close to a year ago) where after taking X pictures (X being anywhere from 10 to 200), I get a "Card Error" and it refuses to take more photos.
If I take the card out and insert it into another device (say, a laptop, or another camera), and then put it back into the D7200, everything works fine. I don’t have to reformat it or do anything other than mount/unmount. I’ve also tried things like just turning the camera off for a while/removing the battery and trying again, this does NOT help - I need to insert the card into some other device.
The D7200 has two card slots - this happens in both of them, so it isn’t the slot. I’ve tried it with 3 different SD cards of different brands, so it isn’t the card. I also updated the firmware, no luck.
I’ve googled and haven’t found anyone else with this same problem. Does anybody have any ideas?